From the left side Menu, select 'Management' option and select 'Zones & Rates'.
Land on the Zone Index page and choose the 'Edit Zone Details' option for the zone in question.
Land on Zone Edit page and choose the grey 'Choose File' button.
Choose a file to upload from your own files.
Select the blue 'Upload Image' option.
The description field here is for the Zone Description.
Once uploaded, you’ll return to the same Zone Edit page and see a confirmation of the image. You can add more images and re-order them as needed.